“I hope we'll get lucky enough to grow old together.”
“We'll grow old waiting.”
“...I wondered if I'd ever be so lucky to have a girlfriend I'd grow old with, a girlfriend who knew my secrets, my fears, my hopes-- and loved me anyway.”
“I'll be happy if running and I can grow old together.”
“We grew up together but we won't grow old together.”
“So come on out, my dear old sweet Sister, - & we'll open our oysters together.”